Blown away by ICE GT Fastback

[circatee]

I'd like to make sure I am understanding what some of the posts on this thread mentioned.

If in a MachE GT, from a standstill, it is quick and could leave an ICE Mustang GT?
If in a MachE GT, and rolling already, it is not as quick, and the ICE Mustang GT would leave it behind?

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[Scooby24]

I'd like to make sure I am understanding what some of the posts on this thread mentioned.

If in a MachE GT, from a standstill, it is quick and could leave an ICE Mustang GT?
If in a MachE GT, and rolling already, it is not as quick, and the ICE Mustang GT would leave it behind?

21-23 MME GT and 24-25 MME GT w/ performance upgrade have very different results.

21-23 MME GT, from a standing quarter mile, would be a close time, but the ICE GT would be rapidly passing it at the trap.

24-25 MME GT w/ performance upgrade, from a standing quarter, would beat an ICE GT easily.

Rolling race the ICE GT is going to beat 21-23 MME GT easy, and 24-25 would be very close.

 

[circatee]

21-23 MME GT and 24-25 MME GT w/ performance upgrade have very different results.

21-23 MME GT, from a standing quarter mile, would be a close time, but the ICE GT would be rapidly passing it at the trap.

24-25 MME GT w/ performance upgrade, from a standing quarter, would beat an ICE GT easily.

Rolling race the ICE GT is going to beat 21-23 MME GT easy, and 24-25 would be very close.

I appreciate the information. This is all a foreign language to me...

 

[Jgg181]

I live in Seattle. I’m lucky to get to 65 on the freeway ?

Wow! You guys can get up to 65 MPH?! Speeds like that are but a dream on Philadelphia expressways ?

…nor in the Orlando area…we call it the Disney “pub-crawl”!?

 

[Jgg181]

21-23 MME GT and 24-25 MME GT w/ performance upgrade have very different results.

21-23 MME GT, from a standing quarter mile, would be a close time, but the ICE GT would be rapidly passing it at the trap.

24-25 MME GT w/ performance upgrade, from a standing quarter, would beat an ICE GT easily.

Rolling race the ICE GT is going to beat 21-23 MME GT easy, and 24-25 would be very close.

…but all the MME’s will use less gas, no matter what!??

 

[Sunburned]

I mean, there are a lot of supercharged or turbo'd mustangs out there these days, they easily make over 700hp. From a roll, you stand zero chance if the driver knows what he's doing.

 

[Jimrpa]

5 second limit, power pulled based on increased speeds, all resulting in low trap speeds. 24+ GTs with performance package levels the playing field..but only levels it.

12.3 @ 116 vs 11.8 @ 115. The Ice GT is barely FASTER crossing the finish line, but the MME is QUICKER because it has the traction advantage at the beginning.

A rolling race - it's more than likely going to come down to driver reaction..who hit the go pedal first.
But a 21-23 GT...not a chance. Sit that one out.

So, this has been troubling me all weekend, as I think about it more. My understanding is that an electric motor has essentially flat response across its rated range. So, if it takes me, say, 4 seconds to go from 0 MPH to 60 MPH, why doesn’t it take me just another 4 seconds, if I’m doing 60 MPH to get to 120 MPH? The acceleration should be the same? The velocities are tiny, so relativistic effects can be ignored and only Newtonian physics used.
I can understand how a car relying on an engine with lots of moving parts and a transmission would have losses, particularly, at higher power levels, but where are the losses in a comparable electrical system?

 

[Jimrpa]

5 second limit, power pulled based on increased speeds, all resulting in low trap speeds. 24+ GTs with performance package levels the playing field..but only levels it.

12.3 @ 116 vs 11.8 @ 115. The Ice GT is barely FASTER crossing the finish line, but the MME is QUICKER because it has the traction advantage at the beginning.

A rolling race - it's more than likely going to come down to driver reaction..who hit the go pedal first.
But a 21-23 GT...not a chance. Sit that one out.

What changed in 24+? Did they get rid of the 5 second limit?

 

[MellowJohnny]

So, this has been troubling me all weekend, as I think about it more. My understanding is that an electric motor has essentially flat response across its rated range. So, if it takes me, say, 4 seconds to go from 0 MPH to 60 MPH, why doesn’t it take me just another 4 seconds, if I’m doing 60 MPH to get to 120 MPH? The acceleration should be the same? The velocities are tiny, so relativistic effects can be ignored and only Newtonian physics used.
I can understand how a car relying on an engine with lots of moving parts and a transmission would have losses, particularly, at higher power levels, but where are the losses in a comparable electrical system?

Because drag squares with speed. At 120 mph your aerodynamic drag is 4x what it was at 60 mph.

Give or take

 

[Guss-E 2021]

Doesn't the battery/ambient temperature also affect power?

 

[GreaseMonkey]

What changed in 24+? Did they get rid of the 5 second limit?

Yes. There is a limit, but I have not found it yet. The car also has some 65-70 lb-ft more than GTPE. Even 24 premiums are around 4.1 sec to 60.

 

[Scooby24]

So, this has been troubling me all weekend, as I think about it more. My understanding is that an electric motor has essentially flat response across its rated range. So, if it takes me, say, 4 seconds to go from 0 MPH to 60 MPH, why doesn’t it take me just another 4 seconds, if I’m doing 60 MPH to get to 120 MPH? The acceleration should be the same? The velocities are tiny, so relativistic effects can be ignored and only Newtonian physics used.
I can understand how a car relying on an engine with lots of moving parts and a transmission would have losses, particularly, at higher power levels, but where are the losses in a comparable electrical system?

Basic Physics....You're not operating in a vacuum. As you push more against the air it pushes back and it needs more and more power to accelerate at the same rate, which it doesn't have because the power is flat.

But it's also not flat. As you gain in speed, the amount of power available drops for thermal control and battery health. Additionally, the longer you accelerate the more power is pulled for the same reasons.

What changed in 24+? Did they get rid of the 5 second limit?

They changed the rear motor to the one used in the lightning and gave an available performance upgrade package for purchase which boosts power and reduced the power throttling which gave a significant decrease in both 0-60, 1/4 mile times and an increase in trap speed from 102 to 115 mph.

 

[DoubleDribble]

Racing on the street is illegal and dangerous. Are the moderators going to close this thread?

 

[jdsimard2012]

Solution - GT with the performance package

 

[Ahlarict]

I’m not familiar with the specific engineering trade offs that Ford was wrestling with in their calculations, but I suspect they were balancing some component and assembly costs vs performance specifications vs customer expectations triangle, and I’d say they got it about right for me. I likely wouldn’t have paid $20k more if the car had a 175mph top speed and a 10sec quarter mile, because I’d never get to use those features. I *do* get a smile every time I launch from a green light, tho. And regardless of whether that fun lasts 5 seconds or 10 seconds, I wouldn’t know because I’ve already eased up off the throttle after 3-4. I don’t mind the occasional ticket (though it’s been years), but I don’t want to go to jail! ;-)

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